Wrench.



G. P. KUNZE.

WRENCH.

APPLICATION FILED MAR. 30, 1914v Patented Sept. 15, 1914.

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GEORGE E. KUNZE, or SLEEPY EYE, vrrnnnsorh, Ass srnoaor ONE-HALF To 5 SOLOMON A, WOOLDRIK, 0F SLEEEY EYE, MINNESOTA.

WRENCH.

ToaZZ whom it may concern:

Be it known that I, GEORGE F. Knivzn, .a. citizen of the United States, residing at Sleepy Eye, in the county of Brown and State of Minnesota, have invented certain. new and useful Improvements in renches, of which the following is a specification, reference being had to the accompanying drawings This invention relates to improvements in wrenches, and more-particularly to that class of wrenches which are generally desig-" nated as monkey wrenches An object of this invention is theprovision of a wrench comprising a stationary jaw having a rearwardly extending shank connected thereto, and a sliding jaw which is provided with a rearwardly extending arm for sliding engagement with the shank of the stationary jaw, the arm being threaded upon its outer face for engagement with the interior threads on the handle, whereby upon'lotation of the handle, the threaded arm'is moved longitudinally upon the shank of thestationary jaw, to adjust the distance between the opposing faces of the jaws.

A further object of this invention is the provision of a wrench of this character which .,comprises a minimum number of parts, whereby it may be cheaply manufactured, and a wrench which may be quickly operated and which will be very eflicient in use.

With these and other objects in view, my invention consists in the novel construction,

combination, and arrangement of parts to adjacent the inner end of the shank to a point adjacent the head thereof, as clearly shown in the drawing. The shank 2 is preferably oval in shape, and slidably mounted upon the shank is a sliding jaw e, the inner extremity of the jaw having an angular slot 5 formed therein for the reception of 1914. Serial at, 828,308,

the angular reduced extension 6 formed on the forward end of a sliding arm 'T Which is adapted for sliding engagementin. the

longitudinal groove 3 in the shank 2. To"

maintain the extension 6 of the arm v7 in the'angular slot 5, a band 8 is frictionally engaged over theinner end of'the jaw & to-

inclose the slot 5 and prevent accidental disengagement ofthe extension'6 therefrom. -.-lhe outer face, of the shank 2 is reduced 'at shoulder 10 intermediate of the ends ofthe shank, and a ferrule '11 is engaged'overthe inner endof the shank toabut against the shoulder 10 and encircle the arm 7, the outer face of which projectsfromitheslot 23in" the shank, the ferrule being provided on'its outer periphery with a rearwardly extending flange 12. ,The projecting faceofthe arm 8 is threaded as-at 13, and a substan-* 'tially cylindrical" handle 14 is" rotatably JPatentedSept. 15, 19 14.

mounted upon the inner end of the shank 2, the outer end of the handle beingi-nteriorly threaded as at 15 for engagement withthei threads 18 of the arm 7 The handle leti's also provided at itsforward end with a for-" wardly extending annular flange 16 for engagement with the flange 12 of the ferrule,

and to prevent longitudinal movement of the handle on the shank 2, a nut 17 is threaded upon the inner extremity of the shank 2 to bear against the inner end of the handle. o

In the operation of my improved wrench, when it is desired to close the jaws 1 and 4 against the work, the handle 14: is rotated in the proper direction to move the arm 7 outwardly on the shank 2 by reason of the engagement of the threads of the arm and the handle, until the sliding jaw 4L contacts with the work, whereupon the wrench may be used in the ordinary manner. When the wrench is used to turn a nut or the like the handle will be prevented from rotation due to the frictional engagement of the arm 7 in the groove of the shank, owing to the pressure upon the handle in turning the work. It will beseen that the various parts of the wrench are readily detachable, so that should any part of the wrench become mutilated or broken, it may be readily replaced. Having thus fully described my invention, what I desire to secure and claim by Letters Patent, is

1. A wrench comprising a stationary jaw having a rearwardly extending shank, a

H i .14, 4,41 an M M, A

sliding jaw having an angular transverse slot formed in the inner end thereof, an arm slidingly engaged upon said shank and having an angular extension at its forward end for engagement in said slot, a band mounted upon the inner end of said sliding jaw to inclose said extension in the angular slot, and a handle rotatably mounted upon the inner end of said shank and operatively engaged with said arm, whereby upon rotation of said handle said sliding jaw will be moved longitudinally of said shank.

2. A wrench comprising a stationary jaw having a rearwardly extending shank projecting therefrom, the inner face of said shank having a longitudinally extending groove formed therein, a sliding jaw mounted upon said shank, said jaw having an angular transverse slot formed in the inner end thereof, an arm slidingly engaged in said groove, the forward end of said arm having an angular extension for engagement in said slot, a band mounted upon the inner end of said slidingjaw to inclose said extension in said angular slot, one face of said arm projecting outwardly of the groove and being threaded, and a handle rotatably mounted upon the inner end of said shank, saidhandle being interiorly threaded for engagement with the threads on said arm, as

and for the purpose described.

3. A wrench comprising a stationary jaw having a rearwardly extending shank proectlng therefrom, said shank'having a longitudinal groove formed in its inner face, a

sliding jaw mounted upon said shank, the inner end of said jaw having a transversely extending angular slot formed therein, an arm having an angular extension at its forward end for engagement with the angular slot, said arm being slidably disposed in the longitudinal roove in the shank, the inner end of said siank being formed with a reduced portion onone side thereof forming a shoulder, a ferrule mounted on the reduced extremity of said shank for engagement against the inner end of said handle to prevent longitudinal movement thereof upon said shank, as and for the purpose described. In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

, GEORGE F. KUNZE. Witnesses:

ALBERT HAUSER,

ALEXANDER SEIFERT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 6. 

